Hi there! Today I finished refurbishing my PAS pump by cutting new paper gasket as the original one was leaking badly. After installing it, filled with fluid, started the engine but no power steering at all. Left it running for about 10 minutes, tried rotating the wheel from side to side but still nothing. Seems it makes no pressure as there's no movement in the reservoir. Is there anything I should do? I double checked everything and could not find any faults. Any ideas, please?